Charlie Ban is the Editor-in-Chief of RunWashington, the runner's source for the DC area.
Registering for a marathon is speculation. Runners slap down their entry fees and play the averages, hoping for a good day months away. When a few hundred signed up for the Runners Marathon of Reston, forcing a sellout two months in advance, they bet that the late March race date would keep it out of the reach of winter weather.
No dice.